Incandescent gas-lamp.



No. 707,|85. V Patented Aug. I9, I902. G. TBESENBEUTEB.

INGANDESGENT GAS LAMP.

(Application filed Dec. 6, 1900.)

(No Model.)

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UNITED STATES 1 PATENT -OFFICE.

GUSTAV TRESENREUTER, OF BERLIN, GERMANY.

INCANDESCENT GAS-LAM P.

SPECIFICATION formingpart of Letters Patent No. 707,185, dated August 19, 1902. Application filed DecemberG, 1900. Serial No. 38,957- (No model.)

To all whom it may concern TER, engineer, a subject of the Emperor of Germany, and a resident of 28 Schonhauser, Allee, Berlin, in the Province of' Branden-; burg, Germany, have invented certain new; and useful Improvements in and in'Connection with Incandescent Gas-Lamps; and I do.

hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to makeand use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to incandescent gaslamps which have the appearance when in use of burning with inverted flames. In a lamp of this kind according to this inven tion the gas-supply pipe passes through the interior of the chimney, and thereby effects a The very considerable heating of thegas. lamp has preferably no cook; but when it is. unscrewed from the piping the said pipingjis automatically closed, so that an accidental escape of gas is impossible.

Figure l of the accompanying drawings is a sectional elevation of an example of a lamp according to this invention Fig. 2 is a plan of a guide-ring for the chimney.

A union a, with left-hand and right-hand threads, is screwed to-ordinary gas-piping and to a gas-supply pipe bl'of small diameter, from which extend downwardly two branches;

0 and d, that lead toan air-tight chamber 6,

above which is a burner sup'portf, provided with openings g for the air-supply. The

burner-support f carries at its upper end aburner c', which is insulated by means of an asbestos ring h and over which a mantle 7c is suspended from a hook l. The burner-support f has a gallery 0, which is provided with openings at and is adapted to carry a chimthe gas supply pipe 5.

t, and thus allows the gas to pass through. An opening 4) in a plate to can be opened or Tclosed by means of a'small screw or, arranged atthe lower end of the lamp. Finally an opening :r/is formed somewhatabove the humor on one ofthe two branches 0 dot the 'gas s'upply pipe.

The mode of operation of the lamp is as fol lows: When the lamp is screwed to the gaspiping, the abutment s raises the ball t in the union a. The gas can then pass freely into the pipe 5 and thence tothe branches 0 and d, through which it reaches the closed chamber e.. Then when the small screwu has been unscrewed until the opening v in the plate to "is uncovered; the gas passes upward through the opening 1; and flows mixed with air to the burner The flame is ignited in the usual manner above the chimney and ignites in turn at the opening a: a pilot-flame, which then burns constantly; When the small screw it is screwed up, the gas can no longer pass ithroughthe opening '0, and the flame is consequently extinguished; but as there is still :gas-in the branches 0 and d the pilot-flame remains alight, sothat the lamp can be lighted without the aid of any external igniting-flame simply by unscrewing the small screw u.

Since, as will be seen; the gas-supply pipeis arranged in this lamp in the interior of the I chimney, the gas is considerably heated and the efliciency is very much increased. The heat generated is so great that it is necessary to insulate the burner'by' means of a ring of suitable material, as asbestos. When the lamp. is disconnected-for example, for the purpose of changing the mantle or the glass chimneythe gas is automatically cut ofl,

since the ball 25 in the union a simply falls as soon as the abutment s is unscrewed with Instead of two branches 0 and d the pipe I) may have only one branch or more than two branches.

Having thus'described my invention, what I claim as new therein, and desiretosecure by Letters Patent of the United States of America, is- I 1. In a gas-lamp, a burner, a mantletsus, pended over the same, a chimney and-one or more gas-feed pipes between the chimney and the mantle, substantially as set forth.

2. In a gas-lamp, a burner, a mantle suspended over the the same,a chimney, a burnersupport forming, a mixing-chamber and provided with air-inlets, an air-tight chamber forming part thereof and gas-pipes proximate the exterior of the mantle, passing through the chimney and the mixing-chamber to the air-tight chamber, means for admitting gas from the air-tight chamber to the mixingchamber and a pilot-flame burner proximate the exterior of the mantle fed by one of said pipes, substantially as set forth.

3. In a gas-lamp, a mixingchamber, a burner connected therewith and an incandescible mantle surrounding the burner, a bifurcated gas-feed pipe whose branches are in communication with said mixing-chamber, one of said branches provided with a jet-orifice proximate to the mantle, and means for arbitrarily controlling the supply of gas to the mixing-chamber; in combination with a chimney surrounding the burner and feedpipe, for the purpose set forth.

4. A gas-lamp comprising a mixing-chamber, a burner connected therewith, an incandescible mantle surrounding the burner and a bifurcated gas-feed pipe in communication with said mixing-chamber and having an extension between its branches provided with a hook for supporting the aforesaid mantle, for the purpose set forth.

5. In a gas-lamp, a mixing-chamber, a burner connected therewith, an incandesoible mantle surrounding said burner, a bifurcated gas-feed pipe whose branches are in communication with said mixing-chamber, an extension from said pipe between its branches and a hook screwed into said extension for supporting the incandescible mantle; in combination with a chimney surrounding the mantle and feed-pipe, for the purpose set forth.

6. In a gas-lamp, a burner, a mantle suspended over the same, a chimney, gas-feed pipes in the form of a rectangle between the chimney and mantle, and a jet-orifice in one of said pipes proximate the lower portion of the mantle, substantially as set forth.

7, In a gas-lamp, a burner, a mantle suspended over the same, ahurner-support of insulating material, a mixing-chamber forming part of the support and provided with airinlets, a gas-chamber below and forming part of the mixing-chamber, a chimney, gas-pipes proximate the exterior of the mantle passing through the chimney and the mixing-chamber to the gas-chamber, one of said pipes provided with a pilot-flame orifice and a needlcvalve to control the exit of gas from the gaschamber to the mixing-chamber and burner, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribingwitnesses.

GUSTAV TRESENREUTER.

Witnesses:

WOLDEMAR IIAUPT, HENRY HASPER 

